Enhance history management with export and import functionalities

- Added endpoints for exporting generations as ZIP archives and audio files.
- Implemented import functionality for generations from ZIP archives with validation.
- Updated HistoryTable component to support new export and import features.
- Improved error handling and user notifications for export/import processes.
- Refactored related hooks and API client methods to accommodate new functionalities.

app/src/lib/api/client.ts

@@ -176,6 +176,54 @@ class ApiClient {
     });
   }
 
+  async exportGeneration(generationId: string): Promise<Blob> {
+    const url = `${this.getBaseUrl()}/history/${generationId}/export`;
+    const response = await fetch(url);
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({
+        detail: response.statusText,
+      }));
+      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+    }
+
+    return response.blob();
+  }
+
+  async exportGenerationAudio(generationId: string): Promise<Blob> {
+    const url = `${this.getBaseUrl()}/history/${generationId}/export-audio`;
+    const response = await fetch(url);
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({
+        detail: response.statusText,
+      }));
+      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+    }
+
+    return response.blob();
+  }
+
+  async importGeneration(file: File): Promise<{ id: string; profile_id: string; profile_name: string; text: string; message: string }> {
+    const url = `${this.getBaseUrl()}/history/import`;
+    const formData = new FormData();
+    formData.append('file', file);
+
+    const response = await fetch(url, {
+      method: 'POST',
+      body: formData,
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({
+        detail: response.statusText,
+      }));
+      throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+    }
+
+    return response.json();
+  }
+
   // Audio
   getAudioUrl(audioId: string): string {
     return `${this.getBaseUrl()}/audio/${audioId}`;

app/src/lib/hooks/useHistory.ts

@@ -1,6 +1,7 @@
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
 import { apiClient } from '@/lib/api/client';
 import type { HistoryQuery } from '@/lib/api/types';
+import { isTauri } from '@/lib/tauri';
 
 export function useHistory(query?: HistoryQuery) {
   return useQuery({
@@ -27,3 +28,130 @@ export function useDeleteGeneration() {
     },
   });
 }
+
+export function useExportGeneration() {
+  return useMutation({
+    mutationFn: async ({ generationId, text }: { generationId: string; text: string }) => {
+      const blob = await apiClient.exportGeneration(generationId);
+      
+      // Create safe filename from text
+      const safeText = text.substring(0, 30).replace(/[^a-z0-9]/gi, '-').toLowerCase();
+      const filename = `generation-${safeText}.voicebox.zip`;
+      
+      if (isTauri()) {
+        // Use Tauri's native save dialog
+        try {
+          const { save } = await import('@tauri-apps/plugin-dialog');
+          const filePath = await save({
+            defaultPath: filename,
+            filters: [
+              {
+                name: 'Voicebox Generation',
+                extensions: ['voicebox.zip', 'zip'],
+              },
+            ],
+          });
+          
+          if (filePath) {
+            // Write file using Tauri's filesystem API
+            const { writeBinaryFile } = await import('@tauri-apps/plugin-fs');
+            const arrayBuffer = await blob.arrayBuffer();
+            await writeBinaryFile(filePath, new Uint8Array(arrayBuffer));
+          }
+        } catch (error) {
+          console.error('Failed to use Tauri dialog, falling back to browser download:', error);
+          // Fall back to browser download if Tauri dialog fails
+          const url = window.URL.createObjectURL(blob);
+          const a = document.createElement('a');
+          a.href = url;
+          a.download = filename;
+          document.body.appendChild(a);
+          a.click();
+          window.URL.revokeObjectURL(url);
+          document.body.removeChild(a);
+        }
+      } else {
+        // Browser: trigger download
+        const url = window.URL.createObjectURL(blob);
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = filename;
+        document.body.appendChild(a);
+        a.click();
+        window.URL.revokeObjectURL(url);
+        document.body.removeChild(a);
+      }
+      
+      return blob;
+    },
+  });
+}
+
+export function useExportGenerationAudio() {
+  return useMutation({
+    mutationFn: async ({ generationId, text }: { generationId: string; text: string }) => {
+      const blob = await apiClient.exportGenerationAudio(generationId);
+      
+      // Create safe filename from text
+      const safeText = text.substring(0, 30).replace(/[^a-z0-9]/gi, '-').toLowerCase();
+      const filename = `${safeText}.wav`;
+      
+      if (isTauri()) {
+        // Use Tauri's native save dialog
+        try {
+          const { save } = await import('@tauri-apps/plugin-dialog');
+          const filePath = await save({
+            defaultPath: filename,
+            filters: [
+              {
+                name: 'Audio File',
+                extensions: ['wav'],
+              },
+            ],
+          });
+          
+          if (filePath) {
+            // Write file using Tauri's filesystem API
+            const { writeBinaryFile } = await import('@tauri-apps/plugin-fs');
+            const arrayBuffer = await blob.arrayBuffer();
+            await writeBinaryFile(filePath, new Uint8Array(arrayBuffer));
+          }
+        } catch (error) {
+          console.error('Failed to use Tauri dialog, falling back to browser download:', error);
+          // Fall back to browser download if Tauri dialog fails
+          const url = window.URL.createObjectURL(blob);
+          const a = document.createElement('a');
+          a.href = url;
+          a.download = filename;
+          document.body.appendChild(a);
+          a.click();
+          window.URL.revokeObjectURL(url);
+          document.body.removeChild(a);
+        }
+      } else {
+        // Browser: trigger download
+        const url = window.URL.createObjectURL(blob);
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = filename;
+        document.body.appendChild(a);
+        a.click();
+        window.URL.revokeObjectURL(url);
+        document.body.removeChild(a);
+      }
+      
+      return blob;
+    },
+  });
+}
+
+export function useImportGeneration() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: (file: File) => apiClient.importGeneration(file),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['history'] });
+    },
+  });
+}